The AEC-3 from Microwave Vision Group is a Microwave Absorber with Absorption 20 dB @ 3.0 GHz, 20 dB @ 6.0 GHz, 30 dB @ 10.0 GHz, 35 dB @ 15.0 GHz, 45 dB @ 30.0 GHz, Thickness 3 Inch/76.2 mm, Thickness 3 Inch, Thickness (mm) 76.2 mm, Weight 2 lbs (1 Kg). More details for AEC-3 can be seen below.